The Check engine light came on so I took it to my local Auto Zone. I was wondering can an o2 sensor mess with all these different fault codes. This is on a 02 Discovery with 49,000 miles. Thanks.

P1129
P0150
P0300
P0307

Much Appreciated. I have not changed plugs or wires and I do not think the original owner did either.
Thanks,

Chris

 

No, I doubt it, the 307 and the 300 cnam be the cause of most of your problems. What octane gas are you running?

 

91 Octane..highest we can get in Northwest Arkansas. Do you think a Wire and plug job would fix the issue? The truck runs phenomenally..thats why I am perplexed. Should I park it until I get it all fixed?

Thanks,

Chris

 

I would pull the number 7 plug, furthrest one back on the drivers side, see what it looks like.